Is there other ways of searching for aliens other than radio telescopes? What if they do not use radio techno?

Answer 1

Study meteoroid materials that have fallen onto the Earth from space. There could be some evidence, if we are lucky.

Answer 2

This has been a question some people have been wondering about-I read in Discover magazine that there is increasing questions about whether advanced civilizations would use radio technology as we are using less and less radio technology.

The best way to look for any form of life is too look for the chemical signs of biological life. Telescopes have been proposed which would be able to find elements like oxygen and compounds like water which are thought to support life (and maybe also more complicated molecules) on planets around other stars. However, some of these telescopes are at risk of loosing funding (so I've read) in place of projects related to manned travel to Mars.

Answer 3

A is actual in that for an identical length, an optical telescope would be lots greater costly than a radio one. this is because of the fact for a telescope to artwork properly, it must be made to an accuracy of a fragment of the wavelength it observes. For gentle, meaning precision of a few hundred nanometres is mandatory. Radio waves are lots longer, so the telescope does not choose something like the precision engineering. Millimetre accuracy or perhaps much less will do. even nonetheless, the call of a telescope - how lots element it could see - is better the bigger the telescope, yet much less the longer the wavelength it observes. So whilst this is much less costly to make an excellent radio telescope, that telescope will possibly not see the kind of high quality element a lots smaller optical telescope might desire to.

Answer 4

Radio frequencies are emitted by most technology. Using radio telescopes helps to look for organized radio signals. If you used a microwave on the moon a radio telescope, if pointed at it would hear it as a organized signal. The problem is that in the vastness of space finding a signal is like looking for a microscopic needle in a haystack the size of the sun. On top of that, even if a signal is found, it will likely be millions of years old. Our planet is in an old section of our galaxy. If life took over five billion years years to get to this point here, has it been enough time elsewhere for life to develop this far elsewhere, and then for a signal to be found, or even reach us? That is doubtful.

Answer 5

I agree with vertical732. At some point, an advanced civilization will have used electromagnetic energy (radio signals) in some form. Even if they stop using it because they have found something better, the signals will have been radiated into space.

I disagree that we are using less radio energy. The electromagnetic spectrum is getting more and more crowded. Remember, cell phones use radio waves!

Answer 6

Good question and astrophysicists are asking that also, radio band communication would be terrible for inter or intra stellar communication. The best thing would be to figure out how you could do FTL communication and then trying to eavesdrop on that method.

Answer 7

Invite them over for tea. I hear aliens are a fan of tea.

Answer 8

Yeah stand outside at night and scream.

Answer 9

HELLO

I AM FROM THE PLANET URANUS


WE ARE HERE ON EARTH


YOU NEED NOT SEARCH ANY FURTHER


I HAVE PERMISSOIN FROM THE MOTHER SHIP TO GO ON WHAT YOU CALL A "DATE" WITH YOU?


YOU CAN VIEW MY PICTORAL HERE


SHOULD I BRING THE GREY POOPON?

Answer 10

go to area 51